Fire-bbick



E. SEAVEY. Lining, for Stoves.

Path ted June 12, 1860.

tnio v 54 A WzZne-s-s es.-

UNITED STATES PATENT oEEIoE.

EBEN 'SEAVEY, OF BOSTON, MASSACHUSETTS.

FIRE-BRICK.

Specification of Letters Patent No. 28,692, dated June 12, 1860.

To all whom it may concern:

Be it known that I, EBEN SEAVEY, of Boston, in the county of Suffolk andState of Massachusetts, have invented an Improved Manufacture of Fire-Brick for Lining for Stoves or Furnaces, and do hereby declare thesame to be fully described and represented in the followingspecification and the accompanying drawings, of which Figure 1, is afront elevation; Fig. 2, a rear elevation; Fig. 3, a top View; Fig. 4, abottom View; Fig. 5, an end view and Fig. 6, a horizontal section of it.

The said fire brick is constructed with main and lateral air conduits orpassages. It also has a curved form by which it may fit closely to theinner surface of a metallic firepot when used therein.

In the drawings, a, and b, are the main conduits, one of which isvertical and the other horizontal. They open into each other, eachconsisting of a groove or channel. From the longer or horizontalchannel, lateral holes or passages c, c, c, are made transverselythrough the brick and in radial directions. The outer surface of thebrick is either cylindrical or conical, or made so as to fit the innersurface of the fire pot. \Vhen used the brick is intended to rest in acourse of fire brick lining and to have its main channel, a, or b, tocommunicate with one or more air conduits leading through the side ofthe fire pot and so that air may freely pass into the horizontal conduitand from thence through the holes, 0, c, c, in numerous streams all ofwhich shall con verge toward the vertical axis of the fire pot orfurnace. In this way, air will be discharged either into the fuel whenin combustion or into the flame thereof.

The air passages so formed in the brick not only operate as described,but also to enable the brick to better resist the destructive effects ofthe fuel. As the internal surface of the brick is about parallel to itsouter surface, the peculiar construction of the brick is made tocontribute to its strength or ability to resist the efiects of heat andshocks or blows.

Each main and lateral conduit by the opposite surfaces of the brickbeing made parallel is situated in a concavo convex rib (as shown in thedrawings) which projecting from the concave or inner face of the bricknot only materially adds to its strength, but is useful in protectingthe rest of the lining more or less from contact with the red hot coalwhen the lining may be in use.

I do not claim arranging air passages in a stove lining as described inthe specification of the United States Patent N o. 17 283. In my firebrick sectional lining, the air discharging holes are led out of onelong groove into which a vertical groove leads.

I claim My improved fire brick lining as made with ribs and air channelsor ducts combined or arranged relatively to each other substantially asspecified.

EBEN SEAVEY.

WVitnesses:

R. H. EDDY, F. P. HALE, Jr.

